Effect of Co-doping of MgO and Y2O3 on the structure and properties of transparent alumina ceramics
LIANG Jianwei1, HUANG Meipeng1, LIU Wei1, YANG Gao1, LIAN Jiao2, BO Tiezhu2, XIE Zhipeng3
1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 51006, China; 2. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100084, China; 3. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100000, China
Abstract:Transparent alumina ceramic sheets were prepared by hydrogen sintering with micro-MgO, composite MgO+Y2O3 (mass ratio of MgO to Y2O3 is 1:1) and composite MgO+La2O3 as sintering assistants. The morphology of ceramic materials was observed by scanning electron microscopy, and the transmittance was measured by spectrophotometer. The effects of the types of sintering aids and the content of MgO+Y2O3 on the transmittance of transparent alumina ceramics were investigated. The results show that the addition of trace rare earth as a sintering assistants can inhibit grain growth, reduce the number of pores in the ceramic sheet, and increase the light transmittance of the alumina transparent ceramic. The transmittance the of the sample with the additive sintering assistant MgO+Y2O3 is significantly higher than the sample with the single sintering assistant MgO. When the contents of the composite sintering assistants MgO+Y2O3 are (0.02% to 0.05%) MgO+(0.02% to 0.05%) Y2O3 (mass fraction), a transparent alumina ceramic sheet with the total light transmittance of 80% or more is obtained. However, when excessive sintering assistants are added, the light transmittance of alumina ceramics will eventually decreases due to the increase in the number of stomata.
梁坚伟, 黄梅鹏, 刘伟, 杨高, 廉娇, 薄铁柱, 谢志鹏. MgO与Y2O3共掺杂对透明氧化铝陶瓷组织与性能的影响[J]. 粉末冶金材料科学与工程, 2019, 24(6): 557-562.
LIANG Jianwei, HUANG Meipeng, LIU Wei, YANG Gao, LIAN Jiao, BO Tiezhu, XIE Zhipeng. Effect of Co-doping of MgO and Y2O3 on the structure and properties of transparent alumina ceramics. Materials Science and Engineering of Powder Metallurgy, 2019, 24(6): 557-562.
[1] AYAKO K, KOUICHI M.Electron spin resonance of transparent alumina ceramics fabricated by spark plasma sintering[J]. Journal of the American Ceramic Society, 2018, 101(10). [2] 王知刚. 43例透明陶瓷托槽的临床应用[J]. 中国医药指南, 2016, 14(5): 15-16. WANG Zhigang.Clinical application of 43 cases of transparent ceramic brackets[J]. Guide of China Medicine, 2016, 14(5): 15-16. [3] 冯秉晨. 成人带陶瓷托槽正畸口腔卫生状况分析[J]. 北方药学, 2015, 12(2): 185. FENG Bingchen.Analysis of orthodontic oral hygiene in adults with ceramic brackets[J]. Northern Pharmaceutical, 2015, 12(2): 185. [4] 袁华, 戢太根. 隐形陶瓷托槽对牙齿矫正患者咬合功能、美观效果的影响[J]. 中国社区医师, 2018, 25: 69-69. YUAN Hua, HAO Taigen.The influence of invisible ceramic brackets on occlusal function and aesthetic effect of orthodontic patients[J]. Chinese Community Physician, 2018, 25: 69-69. [5] 刘伟. 透明氧化铝陶瓷成型与烧结工艺的基础研究[D]. 北京:清华大学, 2013. LIU Wei.Basic research on forming and sintering technology of transparent alumina ceramics[D]. Beijing: Tsinghua University, 2013. [6] 应建新, 张彬, 崔鑫, 等. 透明陶瓷透光性能的影响因素[J]. 强激光与粒子束, 2011, 23(3): 581-585. YING Jianxin, ZHANG Bin, CUI Xin, et al.Influencing factors of transparent ceramic transmittance[J]. High Power Laser and Particle Beam, 2011, 23(3): 581-585. [7] 刘军芳, 傅正义, 张东明, 等. 透明陶瓷的制备技术及其透光因素的研究[J]. 硅酸盐通报, 2003(3): 68-73. LIU Junfang, FU Zhengyi, ZHANG Dongming, et al.Study on the preparation technology and transmittance factors of transparent ceramics[J]. Silicate Bulletin, 2003(3): 68-73. [8] 张丽庆. Yb:YAG和Tm:YAG透明陶瓷的制备及其光学性能研究[D]. 广州: 广东工业大学, 2018 ZHANG Liqing.The preparation and optical properties of Yb:YAG and Tm:YAG transparent ceramics[D]. Guangzhou: Guangdong University of Technology, 2018. [9] 谢志鹏. 陶瓷[M]. 北京: 清华大学出版社, 2011. XIE Zhipeng.Ceramics[M]. Beijing: Tsinghua University Press, 2011. [10] 杨尚余. La2O3、Y2O3和CeO2掺杂对氧化铝陶瓷结构与性能的影响[D]. 太原: 太原理工大学, 2018. YANG Shangyu.Effects of La2O3, Y2O3 and CeO2 doping on the structure and properties of alumina ceramics[D]. Taiyuan: Taiyuan University of Technology, 2018. [11] 杨尚余, 邢学刚, 张娇娇, 等. 稀土氧化物掺杂对氧化铝陶瓷力学性能和摩擦磨损性能的影响[J]. 功能材料, 2018, 49(6): 196-201, 206. YANG Shangyu, XING Xuegang, ZHANG Jiaojiao, et al.Effect of rare earth oxide doping on mechanical properties and friction and wear properties of alumina ceramics[J]. Functional Materials, 2018, 49(6): 196-201, 206. [12] ROSSI G, BUKE J E.Influence of additives on the microstructure of sintered Al2O3[J]. J Am Ceram Soc, 1973, 56(12): 654-659. [13] 赵林, 刘亮, 魏红康, 等. 流延成型法制备透明氧化铝陶瓷烧结性能的研究[J]. 陶瓷学报, 2015(2): 132-137. ZHAO Lin, LIU Liang, WEI Hongkang, et al.Study on sintering properties of transparent alumina ceramics prepared by tape casting[J]. Journal of Ceramics, 2015(2): 132-137. [14] 张晓娟, 乔冠军, 喻大钊, 等. MgO和烧结温度对Al2O3透明陶瓷显微结构和性能的影响[J]. 材料导报, 2011, 25(8): 16-18, 21. ZHANG Xiaojuan, QIAO Champion, YU Dazhao, et al.MgO and the effect of sintering temperature on the microstructure and properties of Al2O3 transparent ceramics[J]. Materials Report, 2011, 25(8): 16-18, 21. [15] 邱春霞, 侯庆龙, 豆帆, 等. 一种高透明度氧化铝陶瓷的制备方法:中国201510030801.7[P].2015-04-05. QIU Chunxia, HOU Qinglong, DOU Fan, et al. A preparation method of high transparency alumina ceramics: China, 201510030801.7[P].2015-04-05. [16] Kim B N, Hiraga K, Morita K, et al.Spark plasma sintering of transparent alumina[J]. Scripta Materialia, 2007, 57(7): 607-610.